Video

Creeping crinoids! Sea lilies crawl to escape predators, new video shows

With their long stalks and feathery arms, marine animals known as sea lilies look a lot like their garden-variety namesakes. Perhaps because of that resemblance, scientists had always assumed that sea lilies stayed rooted instead of moving around lik...

APS lecturer shows rare video of 'teacher-student' immune cell interactions in live animal

The saying goes that a picture is worth a thousand words. But these pictures could one day be worth much more -- the lives saved by the development of new vaccines. Harvard University researcher Ulrich H. von Andrian showed the immune system of a live mouse being challenged by a foreign microbe during a presentation at Experimental Biology 2006. The footage gave many of the physiologists i...

A reason why video games are hard to give up

Kids and adults will stay glued to video games this holiday season because the fun of playing actually is rooted in fulfilling their basic psychological needs. Psychologists at the University of Rochester, in collaboration with Immersyve, Inc., a virtual environment think tank, asked 1,000 gamers what motivates them to keep playing. The results published in the journal Motivation and Emoti...

Teenager moves video icons just by imagination

Now, a St. Louis-area teenage boy and a computer game have gone hands-off, thanks to a unique experiment conducted by a team of neurosurgeons, neurologists, and engineers at Washington University in St. Louis. The boy, a 14-year-old who suffers from epilepsy, is the first teenager to play a two-dimensional video game, Space Invaders, using only the signals from his brain to make movement...

Surgeons with video game skill appear to perform better in simulated surgery skills course

In a study involving 12 surgeons and 21 surgical residents, video game skill was correlated with laparoscopic surgery skill as assessed during a simulated surgery skills course, according to a report in the February issue of Archives of Surgery, one of the JAMA/Archives journals. James C. Rosser Jr., M.D., of Beth Israel Medical Center, New York, and colleagues asked 33 surgeons (21 reside...

Action video games sharpen vision 20 percent

Video games that contain high levels of action, such as Unreal Tournament, can actually improve your vision. Researchers at the University of Rochester have shown that people who played action video games for a few hours a day over the course of a month improved by about 20 percent in their ability to identify letters presented in clutter—a visual acuity test similar to ones used in regul...

Cellular message movement captured on video

Scientists have captured on video the intracellular version of a postal delivery service. Reporting in the journal Bio...